Door-bell



(No Model.)

WITNESSES W. A. MI-LLIGAN.

DOOR BELL.

Patented Feb. 23, 1886;

NrTED STATES ATENT QFFICEQ,

DO'OR- BELL.

$PECIFKCATION forming part of Letters Patent No. 336,864, dated February 23, 1886.

Application filed October 6, 1885.

To all whom it may concern.-

Be it known that I, WILLIAM A. MILLIGAN, a citizen of the United States of America, residing at Wheeling, in the county of Ohio, in the State of West Virginia. have invented a new and useful Door and Call Bell, of which the following is a specification.

My invention has relation to improvements in door and call bells of that class in which the alarm is struck by the movement of a clock-train or similar impelling force and stopped by a trip-lever.

My invention consists in the novel construction and arrangement of parts, as will be hereinafter fully described,and specifically pointed out in the claim.

I have fully illustrated my improvementsin the accompanying drawings, forming a part of this specification, wherein- Figure l is a side view of the entire device, with the front arbor-plate removed. Fig. 2 is a detail view of the striking-wheel and stoparms, and Fig. 3 is a detail View of the triplever.

The letter A designates the frame or casing, one plate thereof being removed in order that the movements may be the better demonstrated. The arbor-plates are provided with the usual bearings for the arbors of the wheels. The power may he a spring, that being pref erable for actuating the train. Mounted in the frameis the clock-train, arranged substantially as shown, wherein the letter B designates the first or great wheel, having atfixed thereto the actuating-spring b, a ratchet on its arbor, with spring-pawl to engage therewith, and the end of its arbor formedto receive a winding-key. The teeth of this wheel B engage with the leaves of the pinion c, mounted on an arbor, 0, upon which arbor is also mounted the wheel 0, the teeth of which mesh with the leaves of the pinion d on the arbor d, carrying a large wheel, D, the teeth of which mesh with pinion e on an arbor upon which is fitted a wheel, E, the teeth of which mesh with the pinion f on an arbor which also carries the regulating-fly f. The wheel D is provided with trip pins or lugs d fixed in each arm thereof and projected parallel with the axis of the 'wheel,to trip the projecting end of the striking-lever, as hereinafter described,

Serial No. 179,139. (No model.)

and on the end of the arbor of this wheel D is rigidly secured a stop-arm, d to engage with the stop f on the trip-lever F. This triplever F is pivotally attached to the frame, as at f, and held by a sleeve, f, on the frame at the other side, wherein the lever is allowed suflicient play upand down to disengage the stop f from contact with the stop-arm (i To a hook, f", or othersuitable stay is connected one end of a spiral spring, f, having its other end secured to the trip-lever, as seen atf To the projecting end of the trip-lever at f the crank-arm or the bell-wire is attached, and from there the wire is carried to the knob or pull, as usual.

TheletterGdesignates the striker,consist ing of awire or bar of sufiicient strength to meet the purpose. This wire has an eye formed in it, which is passed over a bar set across the frame, as at g, and a torsional spring, 9, having one end fixed to the bar,and the other end fixed to the striker, gives the proper movement to the hammer. The upper end of the striker g is extended far enough to engage with the pins on the wheel D, and the lower end carries a hammer, g, to strike the gong or bell H, arranged and secured substantially as shown in the drawings.

The operation is as follows: The trip-lever being drawn down, substantially as seen in the dotted lines in Fig. 1, the vertical stop-pin on the lever releases the end of the stop-arm d, which leaves the train free to move and carry round the wheel D, the pins of which strike the end of the striker, and drawing that back itis returned by the force ofthe torsion-spring, and the alarm is given, and the bell rung at each trip of the striker, and until the end of the stop-arm comes again in contact with the Vertical arm of the trip-lever. The trip-lever is returned to its statical position by the spring.

The frame may be fixed in position by screws, or it may be entirely inclosed in a suitable boxing, and the box secured where desired.

It is designed to attach the trip-lever at either side of the frame, in order that the pullwire can be fixed thereto as will'be most convenient.

The setting or stop arm may have but one point, or more, and the pins on the wheel may be less than four or more.

What I claim as my invention, and desire to secure by Letters Patent, is-

In combination with the clock-train, and with its wheel D, having pins d projected 5 from its side, and the stoparm d secured to its arborto revolve therewith, the spring strikinglevcr G, arranged substantially as set forth, and the trip-lever F, formed with a stop, f to engage the stop-arm (Z and provided with a spring to return the lever to its normal posi- 10 tion, substantially as described.

In witness whereof I have hereunto set my hand in the presence of two attesting witnesses.

l/VILLIAM A. MILLIGAN.

Attest:

ROBERT NESBITT, D. H. BALPH. 

